Grass Valley 1200 Operation Manual - Manual (Page 191)

5-11
Using Aux Buses to Fly a Key
Using Aux Buses to Fly a Key
Another way to fly a key in the switcher is to use the Aux Buses to
select inputs for a DPM. The DPM outputs can then be applied to
switcher inputs which can be used for keying.
To fly a key using this method, do the following:
NOTE: The switcher’s Aux Bus outputs must be connected to the
DPM’s inputs, and the DPM’s outputs must be connected to the
switcher’s inputs and assigned to crosspoints in the Configuration/
Crosspoint Mapping menu. In addition, the Configuration/Define
Inputs menu must be set up to map the DPM key as the Auto Select Key
Source for the DPM video input.
1. In the Bus Delegates section of the panel, delegate the Aux
Bus that feeds the DPM key channel. Then select the Aux bus
[CROSSPOINT] corresponding to the key source you intend to
use.
2. Delegate the Aux bus that feeds the DPM video channel. Then
select the Aux bus
[CROSSPOINT] corresponding to the fill video
you intend to use.
3. Use the DPM to manipulate the key and fill simultaneously.
4. Set up a key on the switcher, selecting the DPM input
[CROSSPOINT] on the Key Bus to provide the key fill and source.
5. Use the switcher Transition controls to transition the key on
air over a switcher background.